I have never made a single bet in my life over sports because I know that most likely would lose my money, then get addicted to play again so that I can get my money back. That's how it works, and prediction is not an easy thing to do.
Although I see my friends making money from it. I try not to be pressured. it is never my thing and would remain that way even though they may make millions one day from it.
I try not to pay attention to the millions sha, normally it's addictive like you said because you'll always try to recover back the money you lost and end up losing, it's like a cycle. But I must say that there are some people who are really lucky with this betting thing. I like the one Hivebuzz is hosting, no pressure at all, just to enjoy the process and have fun